Self-regulating apparatus for tanks.



A. J. GARROW.

SELF REGULATING APPARATUS FOR TANKS. APPLICATION FILED DEC-22,1913. RENEWED SEPT.27, 1915. 1,165,356..

Patented Dec. 21, 1915.

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17 206122 027 M60201 Jmvza A. 1. GARROW. SELF REGULATING APPARATUS FOR TANKS. APPLICATION FILED DEC. 22, 1913. RENEWED SEPT.27, 19I5.

Patented Dec. 21, 1915.

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SELF-BEGULATING- APPARATUS FOR TANKS.

Specification of Letters Patent.

Patented Dec. 21, rare.

Application filed December 22, 1913, Serial No. 808,081. Renewed September 2?, 1915. Serial No. 52,970.

To all whom it may concern:

Be it known that I, ADHEMOR J. GARROW, a citizen of the United States, residing in Chicopee Falls, county of Hampden, and State of Wassachusetts, have invented cer tain new and useful Improvements in Self- Regulating Apparatus for Tanks, of which the following is a specification.

This invention relates to an improved self-regulating apparatus for tanks and, while the invention is'capable of general application, it isparticularly suitable for use to automatically control the level of paper pulp in the pulp chestof a beating engine.

An object of this invention is to provide an improved apparatus, automatically operable to keep liquid in a tank at substantially a constant level. I

Another object of the invention is to provide an improved apparatus automatically operable by a change in level of liquid in the tank to control a pump which may feed to or draw from said tank, whereby the liquid in the latter maybe maintained at substantially a constant level.

Referring to the drawings: Figure 1 is a general view of the apparatus. Fig. 2 is a sectional elevational view of the float tank showing the connections between the float and the valve. Fig. 3 is a front elevational view of the device shown in Fig. 2. Fig. 4 is a transverse sectional view on the line 44 of Fig. 2, showing the interior construction of the valve. Fig. 5 is a detail view of the link construction between the float and the float rod by means of which the valve is operated.

Referring to the drawings in detail: 1 designates a portion of the pulp chest which is used to supply pulp to the beater engine. Connected with the interior of chest 1 by a pipe 2 is a float tank 3 within which is located a float 4. This pulp chest is supposed to contain a quantity of pulp which is drawn off from time to time and conveyed to a suitable beater engine. Extending through and located in the walls of the float tank is a rod 5 which has mounted thereon links 6 and 7, and connected to the latter are links 8 and 9 respectively, which are connected together and to the float 4. One of the links, as 6, is pinned to the rod 5 as indicated at 10. It will be noticed from this construction that when the float 4 rises or falls the rod 5 will be rotated and this movement is transmitted to an arm 11 secured to the outer end of the rod 5. The arm 11 carries a pin 12 which enters a recess 13 in an arm 14, as clearly shown in Fig. 3. The arm 14 is secured to a stem 15 of the valve, which is indicated in a general way by the numeral 16. The interior construction of the' valve is best shown in Fig. 4 from which it will be seen that the valve comprises a casing in which an element 17 is rotatably mounted. This'element as shown in Fig. 4 is formed with two arc-shaped projections 18 and 19 and located between the latter are the recesses 20 and 21 of equal extent. The casing oft-he valve is formed with five ports, indicated at 22, 23, 24, 25, and 26. The opening 25 is connected by a pipe 27 to a suitable supply of a motive power as steam or water under pressure. The openings 24 and 26 are connected by means of the pipes 28 and 29, to the opposite ends of a cylinder 30 in which is located a piston 31. The piston rod 32 as shown in Fig. 1 is connected with a belt shipper rod- 33, which is arranged to shift a driving belt 34 of a suitable pump (not shown). Thus the latter may be started and stopped by movements of the float 4 already described to control the level of the pulp in chest 1. Connected to the openings 22 and 23 are pipes 35 and 36 which are simply exhaust pipes to permit the discharge of fluid from the cylinder 30.

The operation of the device is as follows: Considering the float 4 to have risen so that the valve 17 stands in the position indicated in Fig. 4, fluid under pressure enters by the pipe 27 passes through the passageway 21 to the pipe 28 and into the cylinder 30 causing the piston 31 to travel toward the right as indicated by the arrows in full lines. This movement of the piston causes the belt 34 to be shifted to start a pump to force more pulp from the pulp chest into a beater engine. Obviously, the pump may be used to force liquid into the chest 1 and where such is the case the movement of the piston 31 above described may be arranged to stop the pump. Meanwhile, during the travel of the piston 31 the fluid on the opposite side of the piston and in the right hand end of the cylinder 30 passes through the passageway 20 and thence to the exhaust pipe 35. Should the float 4 move in the opposite direction the valve 17 will be turned into the dotted line position through its connection with the rod 5, arm 11, pin 12, and arm 14. In this position of the valve 17 the fluid under pressure will enter, as before, through the pipe 27, and pass into the passageway 20 to the pipe 29, traveling in the direction of the arrow 37 to the opposite end of the cylinder 30, whereby the piston 31 and shipper rod are moved in the opposite direction.

Meanwhile the exhaust fluid passes through the pipe 28 in the opposite direction to the passageway by means of the pipe 36. It should be stated that the cylinder 30 is suitably supported by means of the standard 38 and-the arm 39 attached thereto and that the shipper rod 33 is supported in the upwardly extending arms 6L0 and ll which are apertured to receive the shipper rod.

\Vhat I claim is:

l. A device to control the level of a liquid, comprising, in combination, a tank member, a float therein, a valve, comprising a casing formed with a plurality of ports and an element rotatable in the casing formed with recesses, a rod transversely mounted in said tank members, operative connections between the float and said rod to effect a rotary motlon of the latter, operative connections between sald rod and sa1d element, a cylinder,

apiston therein, a belt shipper rod 0011* nected to said piston, pipe connections between the valve and the opposite ends of the said cylinder, a pipe connection leading from a source of motive fluid under pressure to the valve and pipe connections extending from the valve to permit the waste fluid from the opposite ends of the piston to escape, whereby when the float rises and falls it controls suitable movements of the piston to control the belt shipper rod, as described.

2. A device of the class described, comprising in combination, a tank, a float therein, a rod mounted in the walls of said tank, connections between the float and the rod to effect rotary movements of the latter, a valve, a stem secured thereto, a forked arm secured to the valve stem, an arm secured to the rod, a pin carried by the arm and en gaging said fork, whereby the rising'and falling movements of the float efl ect rotary movements of the valve, as described.

ADHEMOR J. GARROW. lVitnesses:

HARRY W. BOWEN, HENRY A. BOOTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

